Margaret E. Nichols (born 1947) is an American psychologist and sex therapist who works with individuals and couples and has sub-specialties in sexual dysfunction, trauma and in the population of LGBT people. As Executive Director of the Hyacinth Foundation in New Jersey, an organization that received a contract from the state in 1986 to provide services to intravenous drug users with AIDS, Nichols spoke out on New Jersey's failure to provide services to those with AIDS. and noted "70 to 80 percent of the cases involve gay men". She is a psychotherapist and a founder of the Institute for Personal Growth (IPG Counseling), a provider of mental health services.